Steam generator and superheater.



PATENTED M1111. 19, 1907.4

, a SHEETS-s111131 1.

S14/@Whoa www l C14/fg# 1*. 111111111111011. STEAM GENERATOR ANDSUPERHEATER.

-APPLIOATION FILED APB. 8, 1905.

PATENTED MAR. 19

P. A'. JHAUlJfHToN. STEAM GENERATOR AND SUPBRHBATER.

APPLIGATION IILED APR. 8,190.5.

' SBHEETS-SHEET 2,

lSTEAM GENERATOR AND SUPBRHBABR.

' APPLIUATION FILED APB.. 8,1965.

v3 SHEETS-SHEET 3.

UNITED STATE@ irgrENT onirica.

FRANK A. HAUGHTON, OF SCHENECTADY, NEW YORK.

STEAM GENERATOR AND SUPERHEATER.

perheaters, of which the following is a speci'- y Leo - Myinventionrelates to' an improvementsin steam generators. andsteam-superheaters, Aand .has for lts object to provide an effectivesuperhe'ater in'i combination v'th' a'` steam.v

generator that will give a high temperature of superheated steam and atthe same time be simple, rangement. I

VOne of the4 principal many forms of superheaters is the obstruc tionofthe lues'v or fire-tubes by the superheating apparatus, whicheitherinterferes practical, vand accessible in ar- Withthe draft o rcauses the lctdgment of cinders and sparks in the said luesor fire-tubesto'such an extent-as to entirely closethem,

- tion and accompanying drawings.-,-

y j which not only impairs or "entirely prevents 2,5

superheating, but `causes great mconvenlience becauserof the fact thatthey have to Anothercommon objection to many forms parts inmakingrepairs and the large numer of joints, which arelikely to leak and givetrouble. t. a

.Itis my aim to.' overcome-alli such subjections by this invention, thereferred form 'of whichis described in thefo owing specifica- Figure 1shows a'lonvlfudi tubular or locomotive b superheater removed.' 2 isk a"cross-seetion of Fig. 1onl1ne 2 2.51? i 3 is a longituv dinal section ofone form of t e superheater.

. 4Fig. f fis a front elevation of the super-heater.4 .Fi`g.,5 is allongitudinal sectional elevation of.. theboilery .and superheaterassmbledi a Fig. 6 is asecti'on taken on line 6'6. Fig. 7 is aflongitudinal section' of va modified form of L viewl off-the' `front endof the superheater,

.2 is the fire-box, 3 the'smoke-bfn "the 55 superheater. f Fig. 8 "is anenlarged sectional shownin-Fig. y Fig. 9 is a ycross-section online99,2'Fig. y8.

Referring tok tube orllocomotive type.

Fig.A 1', lis abcile'rl'of the'iref steam-doma, 5.the pipe leading 4fromSpeccation cf LettersPatent.

Application mea April 8,1905. serai No. 254,544.

, defects common to.

tube-sheet 13.

oiler constructed in" accordance .with my inventlonfwith.-` tbe`Patented March 19, 1907.

near the top of the dome into the superheater, as will be hereinayterdescribed.

- 6 is a throttle-valye.by'which steam is ady mitted into `the dry pipe. 7 .'s 'a chamber, preferably cylindrical,

Which opens into .the smoke box 3 and ex-l tends back into'theiboilertoward the fire# I box 2. This chamber is composed oi' theside walls 8,which are the Walls of the boiler and at its back end terminate in ahead 9.

,10 a\ short fire-tubes which extend from the irex tube-sheet 11 to thehead 9 and which are referablyxpanded into the tube- Preferably .and asshown these tubes project 'sheet and thehad to make them steam-tight.`

from the head'Q fora short distance for a purpose to be hereinafterdescribed. Around the chamber 7 are the retubes 12, which extend fromthe fire-.box tube-sheet V11 to the head 13 at the front end oftheboiler. These tubes conveythe products of combustion di-V rectly fromthe fire-box to the smoke-box in the ordinary manner. y

The position. of the chamber 7 in the boiler is shown in Fig. 2, from'which it Will be observed that the chamber is almost surrounded by thetubes'12, which are of normal len'gtli-that is, they extend the fulldistanceJ from the fire-box` tube-sheet to the front Referring to Fig.3, 14 is 'a cylindrical steam-tight chamber which forms the superheaterand has -at ends 15 16 Land-'is provided l with a number of fire-tubes17,. exten ing` clear through the chamber and heads 151,16, the.tubespreferably extending beyond the head 15, as shown. The tubes 17are equal in number tothe number of short tubes 10 and are spaced thesamedistance apart, tube for tube., but of a slightly-greater diameter,so that when the superheater 14 is placed Within the vchan'iber 7, as,shown in-Fig. 5, the

tubes 17 ofthe superhe'ater 'will register with andvftelescope over theopenings of the tubesy lOin the head 9, thereby causing each tubein 'thesuperheater, together. with each -respective'tube ofthe boiler, toconstitute a continuoils and unobstructed assage for the gases of.combustion from tlie fire-box 2 to the smoke-box 3. y I

As will be observed in.Fig. 5, I preferably make thadiameterof-the tubes12 in the su.

10, so that the projecting ends of the tubes 12 'overlap thevy'rlfolvecting ends'- of, the

perheater somewhat larger than the Atubes l -IIO .lss in. the nire,

i 4o superheated and dry state,4

l e1' of the tubes andan through each and all 4tubes 10 in the-'mannerof a telescope, thus insuring a perfect regist uninterrupted -passage ofthem.v y

In 'the preferred forni of my superheater I 5 provide a chamber 18, intowhich the steam passes as it enters by the opening 19,A to which isconnected the end of the dry pipe 5, as

shown in Fig. 5. ro by the partition 20, which extends across the frontend of the superheater, as best shown in Fig. 9.

21 is a vertical partition extending from the side wall of thesuperheater to the partii tion 20. rl.`his side Wall is provided withopenings 22 through which thetubes 17 can pass, and the tubes are madesteam-tight in the openings.

23 is an opening made in the partition 21, zo and 24 is a lpipe whichpreferably, and as shown, is rovided with a double wall having a s aceetween thewalls which extends bac from the vpartition 21, as shown inFigs. 3 and 8. This pipe terminates a short distance from the rear Walland serves .to conduct .the-steam as it enters the superheat'er from theboiler back to the rear of the superheater.

25 25 are the openings by which the steam 3c leavesthe superheater,these openings being located outside the chamber 18. Conse quently thesteam entering the superheater by the opening 19 has to pass through thepipe 24, where it is heated by the tubes withand then back outside thepipe andI among the tubes voutside the' pipe, till, finally, when itreaches the openings 25, to which the pipes 26 are connected and whichlead to the cylinders, the steam is in a highly- L referably make theWialls bf the pipe 24 dou le, as shown, in orderl that the steam in thepipe may not affect the steam'which surrounds the pipe, as the latterhas been raised to a much-higher temperature.

While I prefer to cause the steam to circulate among the tire-tubes bythe means just described, it is evident that such means are notessential to the superheating of the. 5o steam, and they may, ifdesired, be entirely omitted, or thebaiiie-plates 27 27 28 (shown in themodification illustrated in Fig. 7) may be used.- Referring to thislatter igure, it will. be seen that byarranging the plates as thereshoWn-that is, with the plates 2.7 27

extending from the front Wall 16 toward the rear Wall and the plate 28extending from'the rear Wall toward the front Wall and 'located Thechamber 18 is formed ,f

, pei` is lto close up the ends 4of the su the tubes 10 to give up asuiiicient amount of heat to the Water in the boiler as will reduce toreach the superheater at a suilicient temperature to obtain the desireddegree of' superheat.

In Fig. 5 I show the usualsmoke-box diaphragm 29. Behind this diaphragmI preferably mount a damper-30, which is hinged at 31 and operatedy bymeans of any suitable mechanism in control of the engineer orautomatically closed Whenthe throttlewalve is closed. and automatically'opened when the throttle is opened. The object of this darn-v erheatelytubes or to partially close them, t ereby reducing or entirely stoppingthe ilow of'hot gases through the superheater fire-tubes.` 'This isdesirable when the throttle-valve is closed, and consequently no steamis passing through thesperheater.

It will be noticed that in the form of my invention shown the forward,end ofthe superhe'ater extends beyond the front of thev boiler in orderto facilitate Ithefcoupling of" the intake and outlet pipes for thesteam. It will be seen that this entire arrangement is of an extremelysimple and practical character, the fire-tubes are entirely free fromany obstruction, and the smoke-box is no more obstructed than theordinaryboiler Without a superheater. It 4will also be observed that thespace between the shell of the superheater and the ,wall of the chamber7 acts as an effective-jacket to'maintai'n the high tem-` peratureof thesteam passing: through the superheater. f

While I have shown and described Vwhat lI IOO believe to be thepreferred form of niyinvention, I desire to changes may be made in theform, construc.A tion', and arrangement of parts'without de,-'partingfrom the spirit of my invention.

Having thus described my invention, what- I claim, and-desire to secureby Letters Patent, is-

have it understood that many 1 The combination-Within. boiler providedvwith fire-tubes, of a superheater;provided with fire-tubes, thesuperheater being inclosed Within the boiler and'surrounded by theboiler-tubes.

2. The combination with a tubular boiler provided With a chambersurrounded by the tubes of the boiler, a su erheater separate from theboiler and provired with {ir-tubes,

between the' plates 27- -the steam is caused i oo to traverse the pathindicated by the "arrows i and come into intimate contact with thetubes. Y

The ,distance from the fire-box tube-sheet 11 to the'headQ is' suicientto permit the 65 hot gases from the irebox passing through 1 the vtubesof the superheater registering with corresponding tubes of the b oiler.

3. The combination with a tubular boiler i having a chamber formed inone end thereof,

a superheater provided with fire-tubeslocated in the chamber, the `tnbesof the superheater registeringr with corresponding tubes of the boilci...1

. with its radiating-surface. l

4. A tire-tube boiler in combination with l .a tubular superheaterindependently sepag rable from the boiler, the superheater inclosedwithin the tubular boiler, the tubes of the superheater registering withcorresponding tubes of the boiler. o

5. A rire-tube, boiler in combination with a tubular superheaterindependentl)v separable from the boiler, the superlieater inclosedwithin the tubular boiler,- the tubes of the superheater registeringwith correspondingg tubes of the boiler, means to de'lect Athe steamentering the superheater in conttct 6. A re-tube"boiler in combinationwith a tubular superheater independently separable from the boiler, thesuperheater being.`

contained within the boiler, the tbes of the end ofthe boiler, the innerend of said chamsaid tire-tubes.

superheater registering with corresponding tubes ofthe boiler.

. 71'A A boiler in combination with a tubular superheater independentlyseparabley from the boiler, the superheater being contained within theboiler, and means to deflect the@ steam entering the superheater incontact with its radiating-surface.

. 8. A tubular boiler provided with abcylin- `drical chamber extendinginward from one ber terminating in a tube-head, said chamber beingconnected with the {ire-box by tiretubes extending from the lirebox tothe head having a chamber extending invardly from of said chamber, incombination with a superheater consisting of another chamber locatedwithin the aforesaid Vchamber and rovided with rire-tubes vwhichregister with t e afore- 9. The combination with a--tubular boilerhaving a chamber extending inwardly from the head of the boiler, of asuperheater consisting of a chamber having a plurality of fire-tubes,the superheater being contained within the chamber in the boiler, thefiretubes of the superheater re istering with the bire-tubes of theboiler whic enter the cham-l 1.0. The combination wit-ha tubular boilerhaving a chamber extending inwardly Jfrom the head of the boiler, of asuperheater con sisting of a chamber having a plurality of fire-tubes,the superheater 'being contained within the chamber in the'boiler, theriretubes of the superheater registering with the tire-tubes ofthe/boiler which enter the within the chamber in the boiler, the firelheater.

tubes of the superheater registering with the {ire-tubes of the boiler,the superlieater extending beyond the tube-head of' the boiler wit-l1the steam'inlet and outlet connections located on the ex tendingportionof the super- 12. The combination with a tubular boiler having a chamberextending inwardly from the head of. the boiler, of a 'superheaterconsisting of a chamber having a plurality of fire-tubes, thesuperheater being contained within the chamber in the boiler, a centralwhich the steam is conducted and outside of which the steam returns inthe`op osite direotion tothe outlet from the super eater.

13. The combination with a tubular boiler havinga chamber extendinginwardly from the head of the boiler, of a superheater consisting of achamber havinga plurality of fire-tubes, the superheater being containedwithin the chamber in the boiler, a central longitudinal passage withinthe superheater embracing a portion of its {iretubes through which thesteam is conducted and outside of which the steam returns in theopposite direction to the outlet from the superheater,

lsaid-'central passage having a wallfof double thickness withinsulating-space between the walls'. l

14. The combination witha tubular boiler longitudinal passage within thesuperheater embracing a portion of its tire-tubes through.

per to cover and uncover the outer end of the superheater-tubes. 1 15.The combination with a tubular boiler, having a chamber extendinginwardly from the` head of the boiler, of avsuperheater con-l sistingoia chamber having a plurality of tire-tubes, the superheater beingcontained within the chamber inthe boiler, and means within thesuperheater to circulate the steam completely in contact with thefire-tubes of the superheater. I Y

16. f A tubular boiler of the fire-tube ty e in .combination with asuperheater of t e same variety, the generator being so constructed asto embrace within itself the superheater, the tubes of both registeringand the two being independently se arable.

17. A tubular boiler of' the hre-tube ty e ,l in' combination with asuper-heater of t e same variety, the generator being so constructed asto embrace wlthm itself the superheater, the tubes of both registeringand the two being independently separable, a

portion of the generator-chamber being interposed between the tire-boxand the superheater. o

18. A tubular lboiler of the fire-tube type vin` combination with asuperheater of t IIO - the two being Aindependently separablek4 aAterposed between the fire-box and the superheater, and means to deflectthe steam entere lsarne'variety, the generator being so constructed vastoeinbrace Within itself the su-' perheater, the tubes of bothregistering and ,portion of the Vgenerator-chainber being in# 'fing thesuperheater in contact with its radi-4 ating-surface.

' structed as to embrace Within itself te suf perheater, the tubes ofboth registering and 19.' yt-tubular boiler ofthe lstraight--tribe' typein combination with a superheater of the same variety, the generatorbeing so conthe two being separable, a portion of the gene`erator-chaniber being interposed betweenl the fire-box and thesuperheater, and means'- to deflect the steam entering the superheaterin Contact; with itsradi'ating-surface, the su perheatei`extending`sufficiently beyond the generator to allow l.for the intakevand outputv steamonneetions'. c

20. The combination With a tubular boiler having a ohambereXtendinginwardly from the head of tlieb'oiler, of a superheateil consistingof a'chamber having a plurality of fire-tubes, the superheater beingcontained Within thechalnber in the boiler, the fire tubes of thesuperheater registering with the i iireetubes of the boiler which enterthe chamber; a head for said superheater secured operate with' thestructure ofthe super# to receivethelsteam and the `other Chamberoutlet-ports through which to discharge the same. v w

21. In a steam-boiler, the combination f a steam-chamber, a series Aofsuperheating-4 v'tubes'passing' through said' steam-chamber andfire-tubes arranged on both sides of said steam-ehimnber,l substantiallyas described.

Signedjyby meat NewYork city, county" Hand State"0f'NeW`York, this 17thday `of\ thereto 'and extendingbeyon'd the generator,-

said head being formed in one piece and in, itself forming twochambersadapted to co-r heater, the one chamber having an inlet-port,

